Tatsuhito Hasegawa, Satoshi Hirahashi, Makoto Koshino. Determining a smartphone's placement by material detection using harmonics produced in sound echoes. In Takahiro Hara, Hiroshi Shigeno, editors, Proceedings of the 13th International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services, MobiQuitous 2016, Hiroshima, Japan, November 28 - December 1, 2016. pages 246-253, ACM, 2016. [doi]
Abstract is missing.